US11596971B2 - Coating apparatus - Google Patents

Coating apparatus Download PDF

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US11596971B2
US11596971B2 US17/291,683 US201917291683A US11596971B2 US 11596971 B2 US11596971 B2 US 11596971B2 US 201917291683 A US201917291683 A US 201917291683A US 11596971 B2 US11596971 B2 US 11596971B2
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Prior art keywords
coating
dispenser
coating surface
respect
reference plane
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US20220001416A1 (en
Inventor
Yosuke Iwai
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Omron Corp
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Omron Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1015—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target
    • B05C11/1018—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to a conditions of ambient medium or target, e.g. humidity, temperature ; responsive to position or movement of the coating head relative to the target responsive to distance of target
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0204—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to the edges of essentially flat articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
    • B05C5/0212—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles
    • B05C5/0216—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles only at particular parts of the articles by relative movement of article and outlet according to a predetermined path

Definitions

  • the present disclosure relates to a coating apparatus.
  • PTL 1 discloses a sealer coating apparatus for coating a peripheral edge portion of a windshield of an automobile with a sealer.
  • the windshield is held by a work holding unit extending in the vertical direction from a belt conveyor moving along the horizontal plane so as not to be tilted with respect to the horizontal plane.
  • a positional deviation of the windshield in such a sealer coating apparatus is corrected, the rotational deviation of the windshield on the horizontal plane or the vertical deviation of the windshield usually is taken into consideration.
  • tilting of the windshield with respect to the horizontal plane is not considered.
  • An object of the present disclosure is to provide a coating apparatus capable of accurately applying liquid to a predetermined position on a coating surface even if the coating surface is tilted with respect to the horizontal plane.
  • a coating apparatus as an example of the present disclosure including: a dispenser that includes a discharge port and a displacement sensor, the discharge port being configured to be capable of discharging liquid from a vertical direction to a coating region provided on a coating surface of an object to be coated, and the displacement sensor being configured to detect a distance in the vertical direction between the discharge port and the coating region;
  • a dispenser movement control unit that controls the drive device to move the dispenser along a predetermined coating path
  • a tilt detection unit that detects a tilt of the coating surface with respect to a reference plane extending in a direction intersecting the vertical direction, based on the distance detected by the displacement sensor;
  • a coating path correction unit that corrects the coating path based on the tilt of the coating surface detected by the tilt detection unit
  • the dispenser movement control unit moves the dispenser along the corrected coating path.
  • a tilt of the coating surface with respect to the reference plane extending in a direction intersecting the vertical direction is detected based on the distance detected by the displacement sensor, and the coating path is corrected based on the tilt of the detected coating surface.
  • FIG. 1 is a block diagram illustrating a coating apparatus according to an embodiment of the present disclosure.
  • FIG. 2 is a plan view illustrating a coating path of a reference object to be coated.
  • FIG. 3 is a side view of the reference object to be coated.
  • FIG. 4 is a plan view illustrating a corrected coating path of an object to be coated.
  • FIG. 5 is a side view of the object to be coated.
  • FIG. 6 is a flowchart for explaining coating processing of the coating apparatus of FIG. 1 .
  • FIG. 7 is a plan view of another object to be coated.
  • FIG. 8 is a side view for explaining a variation of the coating apparatus of FIG. 1 .
  • a coating apparatus 1 includes a dispenser 10 , a drive device 20 capable of driving the dispenser 10 , and a control device 30 that controls the dispenser 10 and the drive device 20 .
  • the dispenser 10 includes a nozzle 11 and a displacement sensor 12 .
  • the nozzle 11 include a discharge port 111 capable of discharging liquid from the vertical direction Z to a coating region 102 provided on an outer peripheral edge of a coating surface 101 of an object 100 to be coated.
  • the displacement sensor 12 detects a distance D in the vertical direction Z between the discharge port 111 and the coating region 102 of the coating surface 101 .
  • FIGS. 2 and 3 illustrate a plate-shaped object 100 to be coated on which the substantially rectangular coating surface 101 is arranged along the horizontal plane XY.
  • the dispenser 10 is, for example, an air pulse type dispenser that can use a liquid material having any desired viscosity (Pa ⁇ s) (for example, alcohol having a viscosity less than 0.001 or cream solder having a viscosity exceeding 100) as the liquid discharged from the discharge port 111 .
  • a liquid material having any desired viscosity for example, alcohol having a viscosity less than 0.001 or cream solder having a viscosity exceeding 100
  • the drive device 20 is, for example, a robot, and configured to be movable in the horizontal directions X and Y (see FIG. 2 ) and the vertical direction Z (see FIG. 3 ) by holding the dispenser 10 in a state where liquid can be discharged in the vertical direction Z from the discharge port 111 .
  • the control device 30 includes a CPU that performs calculation and the like, a storage medium such as a ROM, RAM, and the like for storing a program or data necessary for controlling the dispenser 10 and the drive device 20 , and an interface unit that performs input and output of a signal to and from an external unit (not shown).
  • the control device 30 includes a dispenser movement control unit 31 , a tilt detection unit 32 , and a coating path correction unit 33 .
  • the dispenser movement control unit 31 , the tilt detection unit 32 , and the coating path correction unit 33 are functions realized by the CPU of the control device 30 executing a predetermined program.
  • the dispenser movement control unit 31 moves the dispenser 10 along a predetermined coating path R 1 for each of the object 100 to be coated. Further, when the coating path R 1 is corrected by the coating path correction unit 33 as described later, the dispenser movement control unit 31 moves the dispenser 10 along a corrected coating path R 2 (see FIG. 4 ).
  • the tilt detection unit 32 detects a tilt ⁇ of the coating surface 101 with respect to a reference plane P (a horizontal plane in the present embodiment) extending in a direction intersecting the vertical direction Z (see FIG. 5 ) based on the distance D detected by the displacement sensor 12 . Specifically, the tilt detection unit 32 detects the tilt ⁇ around a rotation axis 110 extending in the X direction on the coating surface 101 based on a reference distance D 1 and a distance D 2 .
  • the reference distance D 1 is detected in advance in at least three preset locations (for example, points A, B, and C shown in FIG. 2 ) that are at the outer peripheral edge of the coating surface 101 of the reference object 100 to be coated and are on the coating path R 1 .
  • the distance D 2 is detected in at least three preset locations (that is, points A, B, and C shown in FIG. 4 ) that are at the outer peripheral edge of the coating surface 101 of the object 100 to be coated and are on the coating path R 1 .
  • the object 100 to be coated shown in FIGS. 2 and 3 (that is, the object 100 to be coated in which the coating surface 101 is horizontally arranged) is used as the reference object 100 to be coated.
  • the reference distance D 1 and the distance D 2 are the distance D detected in a state where the discharge port 111 is at the same position with respect to the reference plane P in the vertical direction Z.
  • the reference plane P is not limited to the horizontal plane, and is set according to the position and attitude of the reference object 100 to be coated.
  • the coating path correction unit 33 corrects the coating path R 1 based on the tilt ⁇ of the coating surface 101 detected by the tilt detection unit 32 . For example, when the coating surface 101 is tilted by an angle ⁇ around the rotation axis 110 , the coating surface 101 viewed from the vertical direction Z, which is the liquid discharge direction, becomes smaller by ⁇ L ⁇ 2 in the Y direction, as shown in FIGS. 4 and 5 . Thus, the coating path correction unit 33 corrects a length of the coating path R 1 in the Y direction according to the tilt ⁇ of the coating surface 101 detected by the tilt detection unit 32 to create the coating path R 2 .
  • the coating apparatus 1 includes an image sensor 40 that detects a position and attitude of the object 100 to be coated.
  • the control device 30 sets the coating path R 1 based on the position and attitude of the reference object 100 to be coated detected by the image sensor 40 .
  • the dispenser movement control unit 31 moves the dispenser 10 along the coating path R 1 preset based on the position and attitude of the reference object 100 to be coated detected by the image sensor 40 .
  • the displacement sensor 12 detects the distance D 2 in the vertical direction Z between the discharge port 111 and the coating surface 101 in at least three preset locations that are at the outer peripheral edge of the coating surface 101 and are on the coating path R 1 (Step S 1 ).
  • the tilt detection unit 32 detects the tilt ⁇ of the coating surface 101 with respect to the reference plane P based on the detected distance D 2 and the preset reference distance D 1 (Step S 2 ). Then, the control device 30 determines whether the coating surface 101 is tilted with respect to the reference plane P based on whether the tilt detection unit 32 detects the tilt ⁇ of the coating surface 101 with respect to the reference plane P (Step S 3 ).
  • the coating path correction unit 33 corrects the coating path R 1 based on the detected tilt ⁇ of the coating surface 101 with respect to the reference plane P (Step S 4 ). Then, the dispenser movement control unit 31 moves the dispenser 10 along the corrected coating path R 2 (Step S 5 ). When it is determined that the coating surface 101 is not tilted with respect to the reference plane P, the dispenser movement control unit 31 moves the dispenser 10 along the coating path R 1 (Step S 6 ).
  • Steps S 6 and S 7 when the dispenser 10 is moving on the coating path R 1 and R 2 , the control device 30 controls the dispenser 10 to discharge liquid from the discharge port 111 of the nozzle 11 toward the coating region 102 . Then, when the application of the liquid to the coating region 102 is completed, the coating processing is completed.
  • the tilt ⁇ of the coating surface 101 with respect to the reference plane P extending in the direction intersecting the vertical direction Z is detected based on the distance D detected by the displacement sensor 12 , and the coating path R 1 is corrected based on the tilt ⁇ of the detected coating surface 101 .
  • Such a configuration makes it possible to realize the coating apparatus 1 capable of accurately applying liquid to a predetermined position (that is, the coating region 102 ) of the coating surface 101 even if, for example, the object 100 to be coated is not held and the coating surface 101 is tilted with respect to the reference plane.
  • the tilt detection unit 32 detects the tilt of the coating surface 101 based on the distance D 1 and D 2 detected in at least three locations that are at the outer peripheral edge of the coating surface 101 and are on the coating path R 1 and R 2 . With such a configuration, the tilt ⁇ of the coating surface 101 with respect to the reference plane P can be detected more accurately.
  • the tilt detection unit 32 may detect the tilt of the coating surface 101 based on the distance D 1 and D 2 detected in two locations on the coating path R 1 and R 2 .
  • the locations on the coating path R 1 and R 2 in which the distance D 1 and D 2 is detected by the tilt detection unit 32 may not be at the outer peripheral edge of the coating surface 101 .
  • the coating surface 101 is not limited to a substantially rectangular shape, and may have any desired shape.
  • the coating region 102 is not limited to the outer peripheral edge of the coating surface 101 , and may be set to any other area.
  • the dispenser movement control unit 31 may be configured to move the dispenser 10 , when the coating surface 101 is tilted with respect to the reference plane P, at a speed different from that when the coating surface 101 is not tilted with respect to the reference plane P.
  • the dispenser 10 is moved at a speed lower that when the coating surface 101 is horizontal.
  • the dispenser movement control unit 31 moves the dispenser 10 at the speed of VCos ⁇ . In this manner, a line having substantially the same width as a reference line formed by liquid discharged along the coating path R 1 of the reference object 100 to be coated can be formed on the corrected coating path R 2 of the object 100 to be coated.
  • the dispenser movement control unit 31 may be configured to move the dispenser 10 , when the tilt of the coating surface 101 with respect to the reference plane P detected by the tilt detection unit 32 is equal to or more than a threshold value, at a speed different from that when the coating surface 101 is not tilted with respect to the reference plane P.
  • the threshold value is decided from the viewpoint of, for example, whether it is possible, even if the coating surface 101 is tilted with respect to the reference plane P, to draw the substantially same coating track as that when the coating surface 101 is not tilted with respect to the reference plane P.
  • the dispenser movement control unit 31 may be configured to move the dispenser 10 along the corrected coating path R 2 so that the discharge port 111 is located at a position separated from the coating surface 101 by a distance D 1 /Cos ⁇ in the vertical direction Z. In this manner, a line having substantially the same width as a reference line formed by liquid discharged on the coating path R 1 of the reference object 100 to be coated can be formed on the coating path R 2 of the object 100 to be coated.
  • the coating apparatus 1 may be configured to be able to correct not only the deviation of the coating surface 101 with respect to the tilt ⁇ with respect to the reference plane P, but also a rotational deviation on the horizontal plane and a deviation in the vertical direction.
  • the position and attitude of the reference object 100 to be coated detected by the image sensor 40 can be set as a reference position and a reference attitude.
  • the rotational deviation on the horizontal plane and the deviation in the vertical direction can be detected based on the reference position and the reference attitude as well as on the position and the attitude of the object 100 to be coated detected by the image sensor 40 .
  • a coating apparatus 1 of a first aspect of the present disclosure includes:
  • a dispenser 10 that includes a discharge port 111 and a displacement sensor 12 , the discharge port 111 being configured to be capable of discharging liquid from a vertical direction Z to a coating region 102 provided on a coating surface 101 of an object 100 to be coated, and the displacement sensor 12 being configured to detect a distance D 1 and D 2 in the vertical direction Z between the discharge port 111 and the coating region 102 ;
  • a drive device 20 that drives the dispenser 10 ;
  • a dispenser movement control unit 31 that controls the drive device 20 to move the dispenser 10 along a predetermined coating path R 1 ;
  • a tilt detection unit 32 that detects a tilt of the coating surface 101 with respect to a reference plane P extending in a direction intersecting the vertical direction Z, based on the distance D 1 and D 2 detected by the displacement sensor 12 ;
  • a coating path correction unit 33 that corrects the coating path R 1 based on the tilt of the coating surface 101 detected by the tilt detection unit 32 , wherein
  • the dispenser movement control unit 31 moves the dispenser 10 along the corrected coating path R 2 .
  • the tilt ⁇ of the coating surface 101 with respect to the reference plane P extending in the direction intersecting the vertical direction Z is detected based on the distance D detected by the displacement sensor 12 , and the coating path R 1 is corrected based on the tilt ⁇ of the detected coating surface 101 .
  • Such a configuration makes it possible to realize the coating apparatus 1 capable of accurately applying liquid to a predetermined position (that is, the coating region 102 ) of the coating surface 101 even if, for example, the object 100 to be coated is not held and the coating surface 101 is tilted with respect to the reference plane.
  • the tilt detection unit 32 detects the tilt of the coating surface 101 based on the distance D 1 and D 2 detected in at least three locations that are at an outer peripheral edge of the coating surface 101 and are on the coating path R 1 and R 2 .
  • the tilt ⁇ of the coating surface 101 with respect to the reference plane P can be detected more accurately.
  • the dispenser movement control unit 31 moves the dispenser 10 at a speed different from that when the coating surface 101 is not tilted with respect to the reference plane P.
  • a line having substantially the same width as a reference line formed by liquid discharged along the coating path R 1 of the reference object 100 to be coated can be formed on the corrected coating path R 2 of the object 100 to be coated.
  • the dispenser movement control unit moves the dispenser at a speed different from that when the coating surface 101 is not tilted with respect to the reference plane P.
  • the coating processing can be simplified and the load applied on the control device 30 when performing the coating processing can be reduced.
  • the dispenser movement control unit 31 moves the dispenser 10 at a speed lower than that when the coating surface 101 is horizontal.
  • a line having substantially the same width as that of a reference line formed by liquid discharged along the coating path R 1 of the reference object 100 to be coated can be formed on the corrected coating path R 2 of the object 100 to be coated.
  • the coating apparatus of the present disclosure can be used, for example, for coating a windshield with a sealer.

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  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
US17/291,683 2018-11-07 2019-10-18 Coating apparatus Active US11596971B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2018-209956 2018-11-07
JPJP2018-209956 2018-11-07
JP2018209956A JP6988767B2 (ja) 2018-11-07 2018-11-07 塗布装置
PCT/JP2019/041082 WO2020095653A1 (ja) 2018-11-07 2019-10-18 塗布装置

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US20220001416A1 US20220001416A1 (en) 2022-01-06
US11596971B2 true US11596971B2 (en) 2023-03-07

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US (1) US11596971B2 (de)
EP (1) EP3858493A4 (de)
JP (1) JP6988767B2 (de)
KR (1) KR102467828B1 (de)
CN (1) CN112912182B (de)
WO (1) WO2020095653A1 (de)

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CN115722420B (zh) * 2022-12-19 2023-07-14 宁波博信电器有限公司 一种仪表盘上胶加工方法、系统、存储介质及智能终端

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International Search Report for International Application No. PCT/JP2019/041082; dated Nov. 26, 2019.
Written Opinion of the International Searching Authority for International Application No. PCT/JP2019/041082; dated Nov. 26, 2019.

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CN112912182B (zh) 2023-05-02
KR102467828B1 (ko) 2022-11-18
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